Job Description

3-month Contract (Inside IR35) - Possible Extension
1-2 Days On-Site Weekly - East Midlands
Experience in Critical National Infrastructure (Utilities) is Essential
Telefonica Tech is seeking an experienced Cyber Security Architecture Manager to lead secure-by-design practices across both IT and OT environments within our complex, highly regulated customer. This role is critical in strengthening cyber resilience, driving technology roadmaps, and ensuring compliance with cyber, privacy and regulatory obligations.
**1-2 days per week on-site.
Role Overview
You will be responsible for shaping, governing and assuring security architecture across the organisation. This includes maintaining the cyber security technology roadmap, reviewing solution designs, identifying risks, and ensuring alignment to corporate standards, policies and regulatory frameworks.
You will work closely with Enterprise, Solution and Platform Architects, alongside operational and project teams, to ensure all technology-across IT and OT-is secure, compliant, and aligned with wider business strategy.
Key Responsibilities

• Security Architecture & Roadmaps
• Solution Assurance
• Strategy, Governance & Vendor Engagement
• Leadership

Qualifications
Essential Experience & Qualifications

• Proven experience within Critical National Infrastructure (CNI) - ideally Utilities
• Strong background in both IT and OT cyber security
• Degree-level qualification or equivalent
• Relevant cyber certifications (e.g., CISM, CISSP, Security+)
• Deep knowledge of cloud security and modern IT architecture
• Understanding of NIS, GDPR, Privacy by Design and Secure by Design
• Experience influencing senior stakeholders and driving security improvements
• Detail-focused, strategic, calm under pressure, and adept at translating technical risk into business impact

Desirable:

• Experience with TOGAF, Zachman or similar architecture frameworks
• Background as an IT or OT Architect
• Critical National Infrastructure (Utilities) experience or understanding of OT operational challenges

Additional Information
At Telefonica Tech, we believe inclusion is the bridge that empowers everyone to be their authentic selves. We celebrate and respect our differences because diversity drives innovation and makes us stronger.
Be yourself with us, and feel that you belong.
We welcome applicants from all backgrounds and identities regardless of age, disability, gender reassignment, marital or civil partnership status, pregnancy or maternity, race, religion or belief, sex, and sexual orientation.
We are also committed to equity, accessible hiring practices, and creating an inclusive culture through many means including TogetHer (Women's network) and our Employee Resource Groups which include Diversity and Inclusion, Telefonica Tech Pride, Neurodiversity, ELEVATE (African and Caribbean heritage network), and Sustainability.
We don't believe hiring is a tick box exercise, so if you feel that you don't match the job description 100%, but would still be a great fit for role, please get in touch.

Skills Required